Syringe



('No Model.)

E. B. WILDER. SYRINGH.

No. 416,977. Patented Dec. 10, 1889.

N. PETERS. Phowulm n mr, Wahillglnn, a Q

UNITED STATES PATENT OFFICE.

EDlVARD B. \VILDER, OF ST. LOUIS, MISSOURI.

SYRl-NG E.

SPECIFICATION forming part of Letters Patent No. 416,977, dated December 10, 1889.

Application filed October 22, 1889- Serial No. 327,766. (No model.)

To all whom it may concern:

Be it known that I, EDWARD B. \VILDER, of St. Louis, in the State of Missouri, have invented a new and useful Improvement in Syringes; and I do hereby declare that the following is a full, clear, and exact description of the same.

The object of'my invention is to provide a pocket-syringe which will occupy but little space, so as to be capable of being placed in the pocket, and which, while effective in use, will be adapted to have the exit-opening closed to prevent the flow of the liquid contained within the syringe, except when required.

The invention consists in making the nipple of two parts with an opening in each part adapted to align in one posit-ion of the parts and to be out of alignment in another position, thus interrupting the exit of the liquid and serving to cut off the flow of the same while the parts are in the latter position.

The im'ention consists, turtheigin forming the nipple of two parts with an interposed packing, each part having an opening, which align with each other in one position of the parts and are shifted out of alignment in another position.

The invention consists, finally, in details of construction hereinafter set forth.

In the drawings, Figure 1 is a perspective View of the syringe. Fig. 2 is a detached view of the nipple. Fig. 3 is a sectional view of the same. Fig. i is a modification.

In the figures the body of the syringe is shown at A as composed of an elastic tube having one end closed and the other end terminating in a neck. This tube is of convenient length and diameter, so as to be easily carried in the pocket and capable of convenient use. The nipple of the syringe is shown in the detail view as composed of two parts a l), the part a being adapted to fit the neck of the syringe and having a groove out around it, as shown at c, to allow for the contraction of the neck at this point, thus affording a close connection without the addition of other binding means, though a band may be used, if desired. The part Z) of the nipple has a central spindle d, which passes through an opening in the part a, and the two parts are held together by a pin 6 passing through the end of the spindle. By means of this connection the part b swivels on the part a, and is adapted to be turned, as hereinafter described.

To one side of the central passage through the part a is a second passage, through which the liquid passes in its inlet or exit from the syringe. A corresponding passage is formed in the part b, passing at an angle from its under face to the center of the nipple and from thence outward to the pointed end of the part b. The inner end of this passage is adapted to align with the passage in the part a, and when the two are in alignment pressure upon the flexible material of the syringe will eject the liquid therefrom; but when the part Z) has been turned either to one side or the other the passages no longer align and the exit of the liquid is cut off.

In order to make a liquid-proof connection between the parts a and b of the nipple, I interpose a packing-ringf, which is-carried by the part Z) of the nipple, in a portion of the circumference cut for the purpose.

In order to easily move the part b, I provide a projecting lug extending from its base, which may be grasped by the fingers or easily operated to move the part in one direction or the other, and in order to provide a guide by which the operator may know when the passages are in alignment a corresponding lug h is placed upon the part a, and when the two lugs are in line the syringe is in condition to have the liquid ejected therefrom. hen the lug is not in line it is known that the exit of the liquid is cut off.

The part 1) maybe made in any convenient shape, either cone shape, as shown, or of the shape shown in the modification, this not being material.

In the operation of the syringe the two parts of the nipple are brought into such relative position as to cause the openings to align, and then, by inserting the end of the nipple in the liquid with which it is desired to fill the syringe after having first collapsed the flexible tube to drive out the air, the pressure is relieved from the tube and the liquid is drawn in. The movable part of the nipple is then turned so as to take the passages out of alignment, and the syringe can thus be carried in the pocket Without danger of spilling the contents of the syringe.

When it is desired to use the syringe for the purpose of ejecting the liquid therefrom, it is only necessary to cause the passages to align and to apply pressure to the elastic tube,which Will cause the liquid to be ejected from the end of the nipple.

I claim as my invention 1. A syringe consisting of an elastic body portion and a nipple made in tWo parts, one.

part surmounting the other,with passages extending through the two parts aligning in one position of the parts and out of alignment in another position, one of said parts being movable in relation to the other, substantially as described.

2. A syringe consisting of an elastic body portion and a nipple made in two parts, one movable over the face of the other with an interposed packing between the two, each part being provided with an opening aligning in one position and outof alignment in another position of the parts, substantially as described.

3. A syringe consisting of an elastic body portion, a nipple formed in tWo parts, one movable in relation to the other, and a lug on each part adapted to indicate the alignment of the openings in each part, substantially as described. 7

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

EDWARD B. WILDER. 

